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HYAENAS                                         411

closed by bone. The Suricate lives in caves and rock crevices,
and will dig burrows. It is distinctly a diurnal animal, and sits
upon its hind-legs after the fashion of a Marmot. As Buffon
noticed in a tame specimen (thought by him to be a native of
Surinam), the animal barks like a dog. The Suricate is largely
vegetarian, living upon roots.

FIG. 203.—Sxiricate.     Su.ricatit, tetradacty?a.

Fam. 4. Hyaenidae.—Unlike though the Hyaenas appear to
be to the last family—mainly perhaps on account of size—they
are, nevertheless, very nearly akin to them, more so than to the Cat
tribe. It will be remembered that the striping and spotting of
the Hyaenas is very G-enet- and Suricate-like.
There are admittedly two genera among the Hyaenidae,
Hyaena itself with three species,1 and the Aard "Wolf, Proteles, with
but one. But Dr. Mivart considers that the Spotted Hyaena should
form a genus apart, Orocuta—a proceeding which was initiated
by the late Dr. G-ray of the British Museum. The Hyaenidae
are to be distinguished by the following characters:—There are
generally four toes, always so in the hind-foot. The claws are
non-retractile. The nose and upper lip are grooved. The molar
formula is Pm ^ M -^. The soles of the feet are covered with
hairs upon the tarsus and metatarsus. Ho scent glands.
Tail short. Dorsal vertebrae more numerous than in other
Aeluroids, i.e. fifteen. The bulla is divided by a rudimentary
septum only.
1 For the anatomy of Hyaenas see Morrison Watson in Proc. Zaol* Soe. 1877,
p, 369 ; 1878, p. 416 ; and 1879, p. 79.